package cn.wolfcode.filter;

import com.alibaba.nacos.api.utils.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

/**
 * 全局过滤器类
 *  鉴权操作
 */
@Component  //开启交给spring管理
public class AuthGlobalFilter implements GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        String token = exchange.getRequest().getQueryParams().getFirst("token");
        if (StringUtils.isBlank(token) || !"123".equals(token)) {
            System.out.println("鉴权失败");
            exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
            return exchange.getResponse().setComplete(); //表示结束
        }
        // 放行请求,执行下一个过滤器
        System.out.println("鉴权成功");
        return chain.filter(exchange);
    }
}